Zipper



FIG. 1 is a front, top, and right side perspective view of a zipper, showing the claimed design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 and a right view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is an exploded perspective view thereof; and,

FIG. 9 is a top view showing the zipper in a condition of use with a slider.

The zipper has been shown with break lines in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design. The broken lines shown in FIG. 9 depict the slider and form no part of the claimed design. 

CLAIM The ornamental design for a zipper, as shown and described. 